Emacs Common Lisp

https://web.archive.org/web/20130713022536/http://www.lisp.se/emacs-cl/
Emacs Common Lisp is an implementation of Common Lisp, written in Emacs Lisp. The implementation provides a Common Lisp environment, separate from Emacs Lisp, running in Emacs. It does not intend to extend Emacs Lisp with Common Lisp functionality; however, Emacs Lisp functions can call Common Lisp functions and vice versa.

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